Not necessarily; in most cases I would imagine only the book store themselves retain data about your purchase (details of the SKU(s) you purchased, images of yo

Not necessarily; in most cases I would imagine only the book store themselves retain data about your purchase (details of the SKU(s) you purchased, images of you making the purchase on CCTV, etc.) If you use an electronic payment method, only 'metadata' — to use an expression in vogue — about the transaction will be transmitted to third parties, not the details of the particular item(s) you purchased.